BUG: kernel NULL pointer dereference, address: 0000000000000000 #PF: supervisor instruction fetch in kernel mode #PF: error_code(0x0010) - not-present page PGD 4de6b067 P4D 4de6b067 PUD 0 Oops: 0010 [#1] PREEMPT SMP KASAN CPU: 1 PID: 7734 Comm: syz.7.595 Not tainted 5.15.185-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:0x0 Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6. RSP: 0018:ffffc90003f3f618 EFLAGS: 00010246 RAX: 1ffffffff151920f RBX: 0000000000000000 RCX: 0000000000000001 RDX: ffffc90003f3f6c0 RSI: 0000000000000001 RDI: ffff88807506e000 RBP: ffffc90003f3f730 R08: dffffc0000000000 R09: ffffed100ea0dc08 R10: ffffed100ea0dc08 R11: 1ffff1100ea0dc07 R12: ffffffff8a8c9078 R13: dffffc0000000000 R14: ffff88807506e000 R15: ffffe8ffffd75620 FS: 00007fb7470b26c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 000000007d493000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: bond_xdp_xmit+0x282/0x420 drivers/net/bonding/bond_main.c:5228 bq_xmit_all+0xbb1/0xf60 kernel/bpf/devmap.c:391 __dev_flush+0xbf/0x1b0 kernel/bpf/devmap.c:421 xdp_do_flush+0xa/0x20 net/core/filter.c:3985 tun_build_skb drivers/net/tun.c:1703 [inline] tun_get_user+0x297c/0x38d0 drivers/net/tun.c:1797 tun_chr_write_iter+0x112/0x1e0 drivers/net/tun.c:2019 call_write_iter include/linux/fs.h:2172 [inline] new_sync_write fs/read_write.c:507 [inline] vfs_write+0x712/0xd00 fs/read_write.c:594 ksys_write+0x14d/0x250 fs/read_write.c:647 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7fb7492493df Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48 RSP: 002b:00007fb7470b2000 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fb749471fa0 RCX: 00007fb7492493df RDX: 0000000000000082 RSI: 0000200000000640 RDI: 00000000000000c8 RBP: 00007fb7492ccb39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000082 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fb749471fa0 R15: 00007ffde5f237e8 Modules linked in: CR2: 0000000000000000 ---[ end trace 9c863d8d8eb28158 ]--- RIP: 0010:0x0 Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6. RSP: 0018:ffffc90003f3f618 EFLAGS: 00010246 RAX: 1ffffffff151920f RBX: 0000000000000000 RCX: 0000000000000001 RDX: ffffc90003f3f6c0 RSI: 0000000000000001 RDI: ffff88807506e000 RBP: ffffc90003f3f730 R08: dffffc0000000000 R09: ffffed100ea0dc08 R10: ffffed100ea0dc08 R11: 1ffff1100ea0dc07 R12: ffffffff8a8c9078 R13: dffffc0000000000 R14: ffff88807506e000 R15: ffffe8ffffd75620 FS: 00007fb7470b26c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 000000007d493000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400